var fs=require('fs');

fs.readFile('icon.jpg',function(err,origin_buffer){
  console.log(Buffer.isBuffer(origin_buffer));
  fs.writeFile('icon_buffer.jpg',origin_buffer,function(err){
    if(err)console.log(err);
  })
  // var base64Image=new Buffer(origin_buffer).toSting('base64');
  var base64Image=origin_buffer.toString('base64');
  console.log(base64Image);

  var decodedImage=new Buffer(base64Image,'base64')

  console.log(Buffer.compare(origin_buffer,decodedImage));

  fs.writeFile('icon_decoded.jpg',decodedImage,function(err){
    if(err)console.log(err);
  })
});
